(7x^3-3x^2+8x)+(8x^3+6x^2-13x)=

Simple and best practice solution for (7x^3-3x^2+8x)+(8x^3+6x^2-13x)= equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for (7x^3-3x^2+8x)+(8x^3+6x^2-13x)= equation:


Simplifying
(7x3 + -3x2 + 8x) + (8x3 + 6x2 + -13x) = 0

Reorder the terms:
(8x + -3x2 + 7x3) + (8x3 + 6x2 + -13x) = 0

Remove parenthesis around (8x + -3x2 + 7x3)
8x + -3x2 + 7x3 + (8x3 + 6x2 + -13x) = 0

Reorder the terms:
8x + -3x2 + 7x3 + (-13x + 6x2 + 8x3) = 0

Remove parenthesis around (-13x + 6x2 + 8x3)
8x + -3x2 + 7x3 + -13x + 6x2 + 8x3 = 0

Reorder the terms:
8x + -13x + -3x2 + 6x2 + 7x3 + 8x3 = 0

Combine like terms: 8x + -13x = -5x
-5x + -3x2 + 6x2 + 7x3 + 8x3 = 0

Combine like terms: -3x2 + 6x2 = 3x2
-5x + 3x2 + 7x3 + 8x3 = 0

Combine like terms: 7x3 + 8x3 = 15x3
-5x + 3x2 + 15x3 = 0

Solving
-5x + 3x2 + 15x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x'.
x(-5 + 3x + 15x2) = 0

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(-5 + 3x + 15x2)' equal to zero and attempt to solve: Simplifying -5 + 3x + 15x2 = 0 Solving -5 + 3x + 15x2 = 0 Begin completing the square. Divide all terms by 15 the coefficient of the squared term: Divide each side by '15'. -0.3333333333 + 0.2x + x2 = 0 Move the constant term to the right: Add '0.3333333333' to each side of the equation. -0.3333333333 + 0.2x + 0.3333333333 + x2 = 0 + 0.3333333333 Reorder the terms: -0.3333333333 + 0.3333333333 + 0.2x + x2 = 0 + 0.3333333333 Combine like terms: -0.3333333333 + 0.3333333333 = 0.0000000000 0.0000000000 + 0.2x + x2 = 0 + 0.3333333333 0.2x + x2 = 0 + 0.3333333333 Combine like terms: 0 + 0.3333333333 = 0.3333333333 0.2x + x2 = 0.3333333333 The x term is 0.2x. Take half its coefficient (0.1). Square it (0.01) and add it to both sides. Add '0.01' to each side of the equation. 0.2x + 0.01 + x2 = 0.3333333333 + 0.01 Reorder the terms: 0.01 + 0.2x + x2 = 0.3333333333 + 0.01 Combine like terms: 0.3333333333 + 0.01 = 0.3433333333 0.01 + 0.2x + x2 = 0.3433333333 Factor a perfect square on the left side: (x + 0.1)(x + 0.1) = 0.3433333333 Calculate the square root of the right side: 0.585946528 Break this problem into two subproblems by setting (x + 0.1) equal to 0.585946528 and -0.585946528.

Subproblem 1

x + 0.1 = 0.585946528 Simplifying x + 0.1 = 0.585946528 Reorder the terms: 0.1 + x = 0.585946528 Solving 0.1 + x = 0.585946528 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1' to each side of the equation. 0.1 + -0.1 + x = 0.585946528 + -0.1 Combine like terms: 0.1 + -0.1 = 0.0 0.0 + x = 0.585946528 + -0.1 x = 0.585946528 + -0.1 Combine like terms: 0.585946528 + -0.1 = 0.485946528 x = 0.485946528 Simplifying x = 0.485946528

Subproblem 2

x + 0.1 = -0.585946528 Simplifying x + 0.1 = -0.585946528 Reorder the terms: 0.1 + x = -0.585946528 Solving 0.1 + x = -0.585946528 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1' to each side of the equation. 0.1 + -0.1 + x = -0.585946528 + -0.1 Combine like terms: 0.1 + -0.1 = 0.0 0.0 + x = -0.585946528 + -0.1 x = -0.585946528 + -0.1 Combine like terms: -0.585946528 + -0.1 = -0.685946528 x = -0.685946528 Simplifying x = -0.685946528

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.485946528, -0.685946528}

Solution

x = {0, 0.485946528, -0.685946528}

See similar equations:

| (x-4)/5=20 | | 2e+6=6e-10 | | 0.15= | | 3p+2z+1=p-(2z-1) | | 5X-3+12= | | 3y+4x=81 | | 2(6x-1)+8=-6+8x | | 3x-2+5-x=0 | | 8(3x-5)=2(12x+8) | | x-2=-1+x | | -2x+2+3x=4+3x | | 5*(2a+2)-6a= | | -6+8n=5n+6n | | x-.3x=56 | | a^2-2a+15=0 | | (3x+5)(2x-8)=0 | | x-2=x-1 | | (3+y)(2y+7)=0 | | 2x^2+18x=23 | | 5+7k+1=-7+k+4-3 | | -5x-6=2 | | 3-(5x-7)=-2(x+2)+7 | | 2m^2+2m-3= | | 0.05(0.3m+35n)-0.8(-0.09n-22n)= | | -8x-8x=16 | | (-x^2-4)(2x^2+10)= | | 15=2n-7n | | 245=70x+35 | | x*y=25 | | y=70x+35 | | 44.00=0.20x+18 | | 7(-1)+5=2 |

Equations solver categories